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w. AND P. DUBILlERA ELECTRICAL DISCHARGE PRODUCING DEVICE.

APPLICATION FiLED AUGJS. 19KB.

1,307, 854 Patented J 11110 24, 1919.

m1 Mourns Pm'ris CFLFMWQLIVND vusummnm n c UNITED STATES PATENT OFFICE.

WILLIAM DUIBILIER AND PHILIP DUBILIECR, OF NEW YORK, N. Y.

ELEGTRICAL-DISCHABGEPRODUCING DEVICE Application filed August 15, 1916.

To all whom it may concern:

Be it known that we, WILLIAM DUBILIER and PHILIP DUBILIER, of New Yorkcity, in the county of New York, and in the State of New York, haveinvented a certain new and useful Improvement inElectrical-Discharge-Producing Devices; and do hereby declare that thefollowing is a full, clear, and exact description thereof.

The object of our invention has been to produce electrical dischargesand to provide an apparatus therefor, by which arcs possessing arelatively high degree of heat can be produced, for such purposes asexplosive engines, lamps, cigar lighters, or other form of apparatus, inwhich an electric flow or discharge is desired across a resistance thatis high relative to the source of supply, so that a discharge ofcomparatively large volume, and therefore of good heating capacity isproduced, and to such ends our invention consists in the apparatushereinafter specified.

In the accompanying drawing, the figure is a diagrammatic representationof one embodiment of our invention.

\Vhilc we have illustrated our invention by the best embodiment known tous, such embodiment is to be regarded as typical only of many possibleembodiments, and our invention is not to be confined thereto.

In the illustrated embodiment, the source of current 1 is connected inan initial primary circuit containing key 3, an electromagneticvibrator, and a primary winding 8 of a transformer. The vibrator orinterrupter consists of a magnetic core 4 inclosed by a coil 2, whichcoil is connected to a termiual 7 by means of the Wire, 4. Movablecontact 5 of the interrupter is attached to terminal 7 by means ofspring 5 which is biased to hold contact 5 normally against fixedcontact 6. The wire 6 connects fixed contact 6 in circuit with primarywinding 8 of a transformer, and a. return wire 9 leads back to thesource of current 1.

A secondary winding 13 of the transformer is connected in a secondarycircuit containing a gap formed by electrodes14- 15, and such secondarycircuit is completed by the wire 16 leading from electrode 15 to a pointin the primary circuit intermediate coil 2 and fixed contact 6.

The action of the interrupter in inducing a current in the secondarycircuit is supple merited by an oscillating circuit containingSpecification of Letters Patent.

Patented J unc 24, 1919;

Serial No. 115,105.

the interrupter and the transformer primary 8, which oscillating circuitincludes a condenser 10, one side of which is connected to terminalblock 7 by wire 11, and the other side to return wire 9 by wire 12.

In the operation of the device when key 3 is closed the primary currentwill pass from source of energy 1 through coil 2, wire 4,

terminal 7, spring 5", contacts 5 and 6, wire 6 primary winding 8, andreturn wire 9. The core 4 will then attract movable contact 5. breakingthe primary circuit, whereby, through the action of primary coil 8, asec ondary current will be induced in the secondary Winding 13. Theaction of the primary coil 8 is supplemented by oscillations pro ducedin oscillating circuit 10, 11, 7, 5*, 5, 6, 6, 8, 9, 12, and theresultant eflect upon coil 13 is suflicient to break down the gap 1415,and render the same conductive. The primary voltage from source 1 isthen sufiicient to establish a primary current across gap 1415 through acircuit including key 3, coil 2, wire 16, electrodes 14-45, secondarywinding 13, and return wire 9. The How of current through coil 2energizes coil 4, thus holding open the original primary circuit at thecontacts 5 and 6, cutting the transformer and oscillating circuit out ofaction, so long as the primary current is established across the gap14-15. In case such primary current for any reason ceases, the originalprimary circuit will again be completed at contacts 5 and 6, and theaction of the transformer and oscillating circuit in rendering the gap1415 conductive will be repeated.

When the high potential discharge flows across the gap 14, 15, if thereis a medium across said gap such as gases of an explosive engine, or theend of a cigar, a gas filled gap, or any other conductive medium, whoseconductivity can be raised by the action of the high potentialdischarge, then the action just described, will take place and an arcwill be formed following the oscillating high potential discharge and wefind that the temperature of the said arc, or whatever the form ofprimary current flowing across the gap may be termed, is such, owing tothe increase in volume and temperature as compared with the highpotential discharge, that the gases of the engine will be lighted withmuch more certainty than the usual sparking mechanism, or the cigar willbe readily lighted, or an illuminating are can be formed, so that veryadvantageous results are obtained.

The interrupter or condenser-(iischarging d vice acts as a relay ineffect, first aidin in forming a low rcsistain'e path for the primarycurrcnt and thcn automatically cut: ring out the secondary circuit, solong as the arc is maintained, and automatically restoring the highpotential discharge when the are or other form of primary current isinterrupted. When too much resistance is inserted in the gap 1t, 15 forthe primary current to overcome, the condenser-charging device isauton'iatically set in operation again endeavoring to reduce theresistance of the gap suilioiently to permit the flow of the primarycurrent. When, however, the conductivity of the gap is sutlicient sothat the primary current can flow across, the contlensencharging deviceis maintained inopcrative and cuts out the secondary circuit. Any kindof current interrupter or condenscr-charging device can be used and thesame result obtained. It is preferable that the condenser 10 should notbe of such caparity as to extinguish the arc.

\Ve claim:

1. The combination with an induction coil system having an ir gap in thesecondary circuit, of means for interrupting the primary circuit tobridge said gap with the secondary current, means whereby the primarycurrent flows across the gap when the same has been bridged by thesecondary current, and means whereby the How of primary current acrossthe gap holds open the initial nimary circuit. I .1. A dischargeproducing device compris mg a primary circuit containing a transformerprimary and an electrmnagnetie circuit interrupter, a secondary circuitcontaining a gap and a transformer secondary, said secondary circuitbeing connected to the primary circuit between the interrupter coil andcontacts.

3. A discharge producing device comprising a primary circuit containinga transformer primary and an electromagnetic circuit interrupter, asecondary circuit containing a ga and a transformer secondary, and means\v iereby the primary current may be established through said gap whenthe same has been bridged by the secondary current.

t. A discharge producing device comprising a primary circuit containinga transformer primary and an electromagnetic circuit interrupter, anoscillating circuit consisting of a condenser, said primary andinterrupter, a secondary circuit containing a gap and a transformersecondary, said secondary circuit being connected to the primary circuitbetween the interrupted coil and contacts.

5. A discharge producing device comprising a primary circuit containinga transformer primary and an clcctromagiu-tIr circuit interrupter, anoscillating tilflllt consisting of :1 condcnser, said primary andinterrupter, a secondary circuit containing a gap and a transformersecondaiy, and incans \vhcrcby the primary current may he cstalr lishcdthrough said gap when the same has been bridged by the secondarycurrent.

(3. The combination with an induction coil systcm having an air gap inthe secondary circuit, of an interrupter located in the primary circuit,means for opening said intcrrupter to induce a current in the secondarycircuit which will bridge said gap, means whereby the primary currentwill be directed across said gap, and means whereby the interrupter willbe held open so long as the "primary current flows across the gap.

7. A discharge producing device con'ipris ing a primary circuitcontaining an clcctro magnet ic interrupter and a transformcr pri mary,an oscillating circuit including the transformer primary, a seconlllarycircuit containing a gap and a transformer second ary, and means wherebythe primary current may be established through said gap when the samehas been bridged by the secondary current, and the secondary circuit andoscillatin r circuit cut out.

8. The combination with an induction coil system having a gap in thesecondary circuit, of means whereby the initial primary circuit is heldopen and the primary current directed across such gap, when the gap isbridgml by the secondary current and the secondary current reestablishedwhenever the flow of current across the gap ceases.

9. The combination with an induction coil system having an air gap inthe secondary circuit. of an interrupter located in the primary circuit,means whereby the primary current will be broken in the primary circuitand directed across the gap when the gap has been bridged by thesecondary current, and said primary circuit held open so long as theprimary current is maintained across the gap, said means automaticallyreestablishingthe primary circuit to again break down the gap, in casethe flow of primary current across the gap ceases.

10. The combination with an induction coil system having an air gap inthe secondary circuit, of an electromagnetic interrupter having aseparate actuating coil located in the primary circuit, one electrode ofsaid 7 ap being connected in the primary circuit etween the interruptercoil and contacts.

11. The combination with an induction coil system having an air gap inthe secondary circuit, of an electromagnetic interrupter having aseparate actuating coil located in the primary circuit, one electrode ofsaid ap being connected in the primary circuit Eetween the interruptercoil and contacts, and 'a condenser adapted toproduce oscillations inthe primary of the induction coil, upon opening of the interrupter.

12. The combination with an induction coil system having an air gap inthe secondary circuit, of an interrupter located in the primary circuit,a condenser adapted to produce oscillations in the primary of theinduction coil upon opening of said interrupter means whereby theprimary current will be broken in the primary circuit and directedacross the gap When the gap has been bridged by the secondary current,and said primary circuit held open so long as the primary current ismaintained across the gap, and means for automatically reestablishingthe primary circuit to again break down the gap, in case the How ofprimary current across the gap ceases.

In testimony that we claim the foregoing We have hereunto set our hands.

\VILLIAM DU BILIER. PHILIP DUBILIER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G."

